Thermometer for turpentine-stills.



R; DUN'WODY. THERMOMETER FOB. TURPBNTINBSTILLS.

APPLICATION FILED` 11, 19.1'1

Patented Aug. 20, 1912,

Ag; "t

, and useful Improvements'in Thermometers for Turpentine-Stills: and 1 do herebv `de especially adapted to he used in connection sth, 1911. y l

I' elevation partly broken away, of a still' pro- .a portion ofthe wall of the still showing .how the .thermometer is secured in said. wall unirsi) sTArE-s raffrnnrrrion.

RORSONVDUNWODY, ory KiRKWoOn, GEORGIA, AssIGNoR To. niiAnNAvAL sTOREs COMPANY, A CORPORATION or GEORG-1s.. l

. TH'ERMOMETER FOB TURlEENTINE-STIL e:

1,os5,a5s.

" Application led March 11,

To aZZ ywzOmct may concern:

Belit known that 1, BonsonT DUN wom', a citi-zen of the United States, Iresiding at KirkwoodA` in the' county7 -of Dekalb and State ,of Georgia, have invented certain new clare thefollowing to a full, clear; and exact description of the invention, such as will enable others skilled iii the art to which it appertains to make and use the same.

This invention relates tothermometers with turpentine stills, and has for its object toproduce a thermometer of this character which will be simple in construction, etlicient infoperation; less expensive. to constructthan those heretofore proposed; and as a further improvement over the structure of 'thermometer disclosed in my,co-pending application Serial No. 613,073, dated March lVith these objectsin \f'ie t'v,=the invention consists in thenoveldetails offfconstru'ction and combinations of parts more tfully hereafter disclosed and particularlypointed outin the claims.

Referring to the accompanying drawings forming a part of this specification in which like'numerals refer to -like parts in all the views t" Figure 1 is a diagrammatic view in vided with my thermometer; Fig. 2 is a sectional detail view of the thermometer, and

and, Fig. 3 is a view similar to Fig. 2, but showing a modified form of construction.

1 indicates the walls of any-'suitable still, 2 the. masonry surrounding said walls, and 3 an outer casing passing through said masonry and extending to the walls 1 of the still, as shown.

et indicates a packing of'asbestos material or other suitable heat insulator, inclosedlin the casing 3 and extending to the sleeve 5, which is provided-with the shoulder 6 titting against the wall 1 of the still. Said Specification of Letters Patent'.

' still.

sleeve 5 is screw-threaded at its end 7, and

raient-ed Ang. 2o, 1912. i911. sensi No.v 613,935.

a lock nut' S engages said screw-'threaded end, tirmly against the wall 1 and therey by holds the said sleeve 5 in place; The end 9 of said sleeve is likewise screw-threaded,

' asI shown. and a locltnut 10 passes over said end' 9 and firmly fits against acollar 11 fitted1 screw threads at. the end 7, and its screw threads 15 on' its opposite end; engage the in-1 '..ernal threads Of the end .19 of said sleeve 5.

the: thermometerstem '12 jams against the' endof the sleeve 13 and secures the ther -A nut 37'. screw threaded on the end 38 of .i

nionieter in position. The end 14 of the y lockingsleeve 13 is further internally screwthreaded, and these latter screw threads are' adapted vto engage the screw-threaded enlargement 16 on the thermometer, as shown.

It results from the structure so lfar disclosed, when the'thermometer and' locking sleeve 13 are in place, and the latter firmly secured to 'thev sleeve 5,`that the parts are firmly held in position., and the resinous or other materialin the still, will have agood contact with the thermometer, 'andthereforef cause its mercury column 1S to indicate upon suit-able instruments, such as 19l and 20, the correct temperature 1of the interior of the' The tube 21,' as een as the nab of aie thermometer," is .preferably'inade of metal,l

such as copper or steel, and therefore danger of breaking, which would be incident to glass or more brittle material, if; voided, but

I- in the form shown, when the stir Ting instru ments come in contact Ywith the .-bulb, 12,I there is a greater or less danger ofthe same being struck, land thereby loosening the joints between the parts 7, 14 andj''l 'rrd vpermittinga greater or less amoiin't'of age. This danger is'f'urther aggravated by the tact 'that these oints are subjected to the severe racking strains incident to frequent changes of temperature, and therefore, a means vvhich willl avoid these objections, and

vvill at the same time preserve the 'other advantages 4of the' structure just disclosed, is very desirable. v

' In order to combine the advantages of the structure disclosed in Fig. Q with a structure vvhich 'will prevent the bulb -12 vfrom a pocket extending into thek still, and the` interior Walls of Which are in intimate metallic contact with they bulb 26 throughout 'this extent, so that a good conducting path tor the heat is provided through the Walls of said extension Q5, and of the bulb 26, as vvill be readily understood. In this construe` tion it is of the utmost importance that no resinous material should, throughleakage,

' enter the interior ofthe sleeve 5, for if it did, it ivould find its vvay into t-he point betvveen the parts 25 and 26, and thereupon insulate the said joint and prevent the free passage of heat, which Would of course in 'turn destroy the efficiency of the'thermometer. Any leakage into the sleeve 5 is eliiectually prevented by making the lug 6 integral vvith said sleeve 5, and by makingAt-he extension' Q5 and screw-threaded portion 7, integral vvith said lug 6. It, therefore, results' that any leakage-past the locking nut 8 and the Wall 1 would enter the asbestos packing t and fail to find an entrance into the sleeve 5 or into said joint.

In assembling the modilied form ot the invention shovvn in Fig. 3, the said sleeve 5 is brought to place, the lock nuts 8 and 10 adjusted onv their respective screw-threaded nuts '7 and 9 of the sleeve, and the thermometer'bulb'w'ith the sleeve 8O and plug 3l,

as vvell as the plug nut 32 in place, is in-.

serted into the pocket of said sleeve, Whereupon the bulb 26 is pushed as far home as 'possible1 and the nut 32 is set up. 'The lat.- ter nut is thus utilized in driving the tapered bulb 26 into an intimate metallic conta'ct of the extension, and thereby insures a tight metallic joint between said parts 25 and 26. The `sleeve 30 is flanged a's at 3,5, and is screw-threaded as at 36 to the thermometer bulb, so that said bulb is held firmly to the extreme end ot the tube 2l, and the hollow nut 32 is provided with va driving shoulder at the same time for the bulb 26. 'Ihe said plug 31 is also screvvthreaded to the sleeve 30; as shown, and as the tube Q1 passes throughits center, the Whole structuremakes an exceedingly iirm and simple support for the tube 2l and bulb 2G when in use. j

' It is obvious that 4those skilled in the art may vary the details of construction and the arrangement of parts Without departing from the spirit of my invention, and therefore I do not Wish to be limited to such ifeatures except as may be required by the claims.

What I4 claim is l. In a thermometer for stills, the combination of a sleeve adapted to enterthe still; heat insulating material surrounding said sleeve; a thermometer stem and bulb adapted to project throughsaid sleeve beyond the ivallv of'said still; a sleeve surroundingI said stem and screw-threaded to said bulb; and

screw-threaded means for securing said bulb in position in said still, substantially as described.

2. In a thermometer for stills. the combination of a sleeve provided Wit-h an interiorly tapered, closedy extension adapted to project into said still; means tor securing said sleeve to the Walls of said still; and a readily detachable thermometer having a tapered bulb adapted to .tit the interior of said extension, -Whereby said thermometer may be readily removed ivit'hout opening said still, substantially as described. l 3. In a thermometer for stills, the combibination of a sleeve provided with an interiorly tapered closed extension adapted lto project into said still; a locking nut and lug associated vvith said sleeveqfor holding the same to t-he walls of said still; a readily removable thermometer having a tapered bulb adapted to fit said tapered extension; and a tubular nut fitting said sleeve for securing and adjusting said bulb, substantially as described.

et. In a thermometer for stills, the combinationI of a sleeve provided with an interiorly tapered closed extension adapted to project into said still: a locking 'nut and lug associated vvith said sleeve for holding the same tothe Walls of said still; a readily removable thermometer lia-ving a tapered bulb adapted to fit said tapered extension; a sleeve having a flanged end surrounding the stem of said thermometer and secured to the bulb thereof: and a tubular nut litt'i-ng said lirstnamed sleeve and coacting \vith said flanged end for securing and adjusting said bulb, substantially as described. l

5. In a thermometer for stills, the combination of a sleeve provided with a closed interiorly tapered extension adapted to project into said still; means for securing said =sleeveto said still; mi a thermometer coacting with said s eeve provided with a, 'tak justing 'nut surrounding-'said plug, substan,

tially as described.

In testimony whereof, I-ax my signature, in presence'of'two Witnesses.

- RGBSON DUNWODY. I Witnesses:

' T. A. WITHERsPooN,

R, M; PARKER. 

